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Downwelling is the sinking of surface ocean waters to deeper depths due to the movement of colder, denser water masses. It plays a key role in redistributing heat, nutrients, and carbon dioxide in the ocean, influencing marine ecosystems and climate patterns.
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How is wind driven ekman transport related to coastal upwelling and downwelling?
They are both wind driven, if the Ekman Transport is moving in towrds the shore then downwelling will pull water from it and move it down and out. While when the Ekman Transport is moving out away from shore up welling will pull water up and feed the Transport. Note all directions are based on 90 degrees to the left or right fo the wind direction depending on wich Hemisphere.
What is responsible for movement of tectonic plates in lower mantle?
The movement of tectonic plates in the lower mantle is primarily driven by the process of mantle convection. This is caused by the heat released from the Earth's core, which creates circulation patterns in the mantle that can cause the plates to move. The upwelling and downwelling of material in the mantle contribute to the lateral movement of tectonic plates.
How does a continent affect the movement of a surface current?
A continent can disrupt the flow of a surface current by acting as a barrier and forcing the current to change direction or split. This can create eddies, upwelling, or downwelling of water that can impact the speed and direction of the current. Continents can also influence the formation and intensification of currents by shaping the overall circulation patterns in the ocean.
What causes the belts of clouds seen on Neptune?
The belts of clouds seen on Neptune are thought to be caused by differences in temperature and composition within the planet's atmosphere. These belts represent areas of upwelling and downwelling movements of gases, creating distinct cloud patterns. Temperature variations and the planet's strong winds also play a role in shaping these cloud belts.
What is wind stress curl?
Wind stress curl is a measure of the twisting or rotational effect of wind stress on the surface of the ocean. It represents the change in the horizontal wind stress field with respect to direction, indicating the tendency for water to converge or diverge in the surface layer. Positive wind stress curl leads to convergent flow and downwelling, while negative wind stress curl leads to divergent flow and upwelling.
What downwelling defined as?
Downwelling is the process of accumulation and sinking of higher density material beneath lower density material. A common example is convection currents in fluids.
What are the upwelling and downwelling compare and contrasted?
go find it out your self
Which is not associated with up-welling?
Downwelling is not associated with upwelling. Downwelling refers to the sinking of surface water in the ocean, whereas upwelling is the process where deep, nutrient-rich waters rise to the surface.
Is downwelling of the oceans currents gianing or losing energy?
Downwelling currents in the oceans typically do not directly "gain" or "lose" energy. These currents are driven by processes such as density differences and wind patterns, rather than changing energy levels. However, factors like climate change can indirectly impact downwelling currents by altering ocean temperatures and salinity, which can influence their strength and distribution.
How and why would downwelling affect fisheries in coastal areas on the eastern sides of ocean basins?
Downwelling in coastal areas on the eastern sides of ocean basins can lead to reduced nutrient supply from deeper waters to the surface, affecting primary production and thus the food chain for fisheries. This can result in lower fish populations and decreased productivity in those areas. Additionally, downwelling can cause changes in water temperature and oxygen levels, further impacting fish habitat and migration patterns.
Upwelling and downwelling?
Upwelling is the process of nutrient-rich deep ocean water being brought to the surface, usually due to wind-driven currents or coastal topography. This phenomenon enhances productivity and supports marine ecosystems. In contrast, downwelling is the sinking of surface water, which can occur when surface water becomes denser due to cooling or increased salinity, potentially leading to nutrient depletion in the upper ocean layers.
How is wind driven ekman transport related to coastal upwelling and downwelling?
They are both wind driven, if the Ekman Transport is moving in towrds the shore then downwelling will pull water from it and move it down and out. While when the Ekman Transport is moving out away from shore up welling will pull water up and feed the Transport. Note all directions are based on 90 degrees to the left or right fo the wind direction depending on wich Hemisphere.
What is responsible for movement of tectonic plates in lower mantle?
The movement of tectonic plates in the lower mantle is primarily driven by the process of mantle convection. This is caused by the heat released from the Earth's core, which creates circulation patterns in the mantle that can cause the plates to move. The upwelling and downwelling of material in the mantle contribute to the lateral movement of tectonic plates.
How does a continent affect the movement of a surface current?
A continent can disrupt the flow of a surface current by acting as a barrier and forcing the current to change direction or split. This can create eddies, upwelling, or downwelling of water that can impact the speed and direction of the current. Continents can also influence the formation and intensification of currents by shaping the overall circulation patterns in the ocean.
What causes the belts of clouds seen on Neptune?
The belts of clouds seen on Neptune are thought to be caused by differences in temperature and composition within the planet's atmosphere. These belts represent areas of upwelling and downwelling movements of gases, creating distinct cloud patterns. Temperature variations and the planet's strong winds also play a role in shaping these cloud belts.
What is wind stress curl?
Wind stress curl is a measure of the twisting or rotational effect of wind stress on the surface of the ocean. It represents the change in the horizontal wind stress field with respect to direction, indicating the tendency for water to converge or diverge in the surface layer. Positive wind stress curl leads to convergent flow and downwelling, while negative wind stress curl leads to divergent flow and upwelling.
How do subsurface lake waters cool down in the fall?
Subsurface lake waters cool down in the fall due to a combination of factors, such as decreasing air temperature, reduced sunlight hours, and cooler atmospheric conditions. As the air temperature drops, the cooler surface water absorbs less heat from the atmosphere, causing it to cool down gradually. This cooler surface water eventually sinks, mixing with the deeper layers of the lake, resulting in an overall cooling of the subsurface waters.
